公开(公告)号：US10122295B2

公开(公告)日：2018-11-06

申请号：US14357209

申请日：2012-04-12

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H02M7/538 ,  H02M3/338 ,  H01F3/14 ,  H01F30/16

摘要： A self-excitation push-pull type converter with a transformer having a closed magnetic core or iron core, which formed of a main part (52) and a local part (53). The local part reaches magnetic saturation earlier than the main part under the same increasing magnetic field excitation. When the self-excitation push-pull type converter is in a light load state, the efficiency is significantly improved, and further improved in a rated load state. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter increases while still keeping the loss low. The probability of generating a current peak at the moments of switching on or off is reduced, thereby further improving the efficiency and reducing output ripples.

公开(公告)号：US10008312B2

公开(公告)日：2018-06-26

申请号：US14356886

申请日：2012-03-20

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H01F17/04 ,  H01F17/06 ,  H01F3/00 ,  H01F3/14 ,  H02M3/338 ,  H01F30/16 ,  H01F27/24

CPC分类号： H01F3/00 ,  H01F3/14 ,  H01F27/24 ,  H01F30/16 ,  H02M3/338

摘要： A magnetic core for a transformer, which includes a closed ring with a thick part and a thin part. The thin part is magnetically saturated before the thick part when excited by the same increasing magnetic fields. The thin part only operates briefly at or near first quadrant saturation point or a third quadrant saturation point and, for the rest of the time, it operates in a state between the first quadrant saturation point and the third quadrant saturation point. The present invention overcomes the drawbacks of the conventional magnetic core for a self-excitation push-pull type converter, and significantly improves the efficiency of the converter when it is under a light load, and further improves its efficiency while under a rated load. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter is improved while still keeping the loss low.

公开(公告)号：US20140376290A1

公开(公告)日：2014-12-25

申请号：US14357215

申请日：2012-04-28

申请人： Baojun Wang ,  Xiangyang Yin

发明人： Baojun Wang ,  Xiangyang Yin

IPC分类号： H02M7/217 ,  H02M1/42 ,  H02M7/06

CPC分类号： H02M7/217 ,  H02M1/4266 ,  H02M7/06 ,  H02M7/2176

摘要： An AC to DC circuit includes a rectifier circuit, a voltage detecting circuit, the current source and the output circuit. The rectifier circuit converts the AC power to pulsating DC. The constant current source provides current to the voltage detection circuit and to the control port of the output circuit. The current passing throughout the constant current source is the sum of the current flowing to the voltage detection circuit and to the output circuit. The voltage detection circuit increases with the instantaneous value of the output voltage of the rectifier circuit, it absorbs more current from the current provided by the constant current source and less current flows from the constant current source to the control port of the output circuit. The output circuit amplifies the current of the control port and outputs it to power the load. The AC to DC circuit of the present invention can rectify the portion of an alternating input voltage below a sine peak of the alternating current, working at a sine wave ascending area and a sine wave descending area, and it can carry a capacitive load.

摘要翻译： AC至DC电路包括整流电路，电压检测电路，电流源和输出电路。 整流电路将交流电转换为脉动直流。 恒流源向电压检测电路和输出电路的控制端口提供电流。 通过恒流源的电流是流向电压检测电路和输出电路的电流之和。 电压检测电路随着整流电路的输出电压的瞬时值而增加，从恒流源提供的电流吸收更多的电流，而较少的电流从恒流源流向输出电路的控制端口。 输出电路对控制端口的电流进行放大并输出，为负载供电。 本发明的交流 - 直流电路可以将交流输入电压的一部分整流到正弦波上升区域和正弦波下降区域工作的交流电的正弦峰值以下，并且可承载容性负载。

公开(公告)号：US20140313805A1

公开(公告)日：2014-10-23

申请号：US14357209

申请日：2012-04-12

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H02M7/538

CPC分类号： H02M7/538 ,  H01F3/14 ,  H01F30/16 ,  H02M3/3384

摘要： A self-excitation push-pull type converter with a transformer having a closed magnetic core or iron core, which formed of a main part (52) and a local part (53). The local part reaches magnetic saturation earlier than the main part under the same increasing magnetic field excitation. When the self-excitation push-pull type converter is in a light load state, the efficiency is significantly improved, and further improved in a rated load state. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter increases while still keeping the loss low. The probability of generating a current peak at the moments of switching on or off is reduced, thereby further improving the efficiency and reducing output ripples.

摘要翻译： 一种具有由主要部分（52）和局部部分（53）形成的具有封闭的磁芯或铁芯的变压器的自激式推挽型转换器。 在相同增加的磁场激发下，局部部分比主要部分早于磁饱和。 当自激式推挽型转换器处于轻负载状态时，效率显着提高，并且在额定负载状态下进一步提高。 随着磁饱和变压器线圈的匝数减小，转换器的工作频率增加，同时仍保持低损耗。 在导通或断开的瞬间产生电流峰值的概率降低，从而进一步提高效率并减少输出波纹。

公开(公告)号：US20140169044A1

公开(公告)日：2014-06-19

申请号：US13979654

申请日：2012-01-12

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H02M3/338 ,  H02M3/335

CPC分类号： H02M3/3382 ,  H02M1/32 ,  H02M3/33538

摘要： A self-excited push-pull converter, comprising a Jensen circuit, characterized in that a two-terminal network with an electrical property of passing high frequencies and blocking low frequencies exists between a terminal of a magnetic saturation transformer primary winding and a terminal of a main transformer primary winding in said Jensen circuit, i.e. said magnetic saturation transformer primary winding is connected in parallel with said main transformer primary winding through said two-terminal network. The self-excited push-pull converter of the present invention has a good self-protection capability and can be restored by itself to normal operation after overcurrent and short circuit disappear.

摘要翻译： 一种自激式推挽转换器，包括Jensen电路，其特征在于，在磁饱和变压器初级绕组的端子和端子之间存在具有通过高频和阻断低频的电特性的双端子网络 所述Jensen电路中的主变压器初级绕组，即所述磁饱和变压器初级绕组通过所述两端网络与所述主变压器初级绕组并联连接。 本发明的自激式推挽转换器具有良好的自我保护能力，可以在过电流和短路消失后自身恢复正常工作。

公开(公告)号：USD1025708S1

公开(公告)日：2024-05-07

申请号：US29919007

申请日：2023-11-30

申请人： Baojun Wang

设计人： Baojun Wang

摘要： FIG. 1 is a front, left and top perspective view of a tapered cup, showing my design.
FIG. 2 is a rear, right and bottom perspective view thereof.
FIG. 3 is a front elevation view thereof.
FIG. 4 is a rear elevation view thereof.
FIG. 5 is a left side elevation view thereof.
FIG. 6 is a right side elevation view thereof.
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines depict portions of the tapered cup that form no part of the claimed design.

公开(公告)号：US09438133B2

公开(公告)日：2016-09-06

申请号：US14357215

申请日：2012-04-28

申请人： Baojun Wang ,  Xiangyang Yin

发明人： Baojun Wang ,  Xiangyang Yin

IPC分类号： H02M7/217 ,  H02M1/42 ,  H02M7/06

CPC分类号： H02M7/217 ,  H02M1/4266 ,  H02M7/06 ,  H02M7/2176

摘要： An AC to DC circuit includes a rectifier circuit, a voltage detecting circuit, the current source and the output circuit. The rectifier circuit converts the AC power to pulsating DC. The constant current source provides current to the voltage detection circuit and to the control port of the output circuit. The current passing throughout the constant current source is the sum of the current flowing to the voltage detection circuit and to the output circuit. The voltage detection circuit increases with the instantaneous value of the output voltage of the rectifier circuit, it absorbs more current from the current provided by the constant current source and less current flows from the constant current source to the control port of the output circuit. The output circuit amplifies the current of the control port and outputs it to power the load. The AC to DC circuit of the present invention can rectify the portion of an alternating input voltage below a sine peak of the alternating current, working at a sine wave ascending area and a sine wave descending area, and it can carry a capacitive load.

摘要翻译： AC至DC电路包括整流电路，电压检测电路，电流源和输出电路。 整流电路将交流电转换为脉动直流。 恒流源向电压检测电路和输出电路的控制端口提供电流。 通过恒流源的电流是流向电压检测电路和输出电路的电流之和。 电压检测电路随着整流电路的输出电压的瞬时值而增加，从恒流源提供的电流吸收更多的电流，而较少的电流从恒流源流向输出电路的控制端口。 输出电路对控制端口的电流进行放大并输出，为负载供电。 本发明的交流 - 直流电路可以将交流输入电压的一部分进行纠正，该交流输入电压低于交流电的正弦峰值，工作在正弦波上升区域和正弦波下降区域，并且可承载容性负载。

公开(公告)号：US09705421B2

公开(公告)日：2017-07-11

申请号：US14128628

申请日：2012-01-12

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H02M3/338 ,  H02M7/538 ,  H02M7/5383

CPC分类号： H02M7/538 ,  H02M3/3384 ,  H02M7/53835

摘要： A self-excited push-pull converter, where between the bases of the push-pull converter's transistors (TR1, TR2) and the effective power suppler there is provided a constant current source (II), which provides a constant current to the bases of the transistors. With the working voltage increases, the circuit enters into an operating mode not based on the core-saturation working mode, because the transistors' base current is limited by the constant current source and consequently the transistors' collector current cannot increase.

公开(公告)号：US20160211769A1

公开(公告)日：2016-07-21

申请号：US14128628

申请日：2012-01-12

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H02M7/538

CPC分类号： H02M7/538 ,  H02M3/3384 ,  H02M7/53835

摘要： A self-excited push-pull converter, where between the bases of the push-pull converter's transistors (TR1, TR2) and the effective power suppler there is provided a constant current source (II), which provides a constant current to the bases of the transistors. With the working voltage increases, the circuit enters into an operating mode not based on the core-saturation working mode, because the transistors' base current is limited by the constant current source and consequently the transistors' collector current cannot increase.

摘要翻译： 一种自激式推挽转换器，其中在推挽转换器的晶体管（TR1，TR2）的基极和有效功率提供器之间提供恒流源（II），其提供恒定电流到基极 晶体管。 随着工作电压的增加，电路进入不基于核心 - 饱和工作模式的工作模式，因为晶体管的基极电流受到恒流源的限制，因此晶体管的集电极电流不能增加。

公开(公告)号：US20140354384A1

公开(公告)日：2014-12-04

申请号：US14356886

申请日：2012-03-20

申请人： Baojun Wang

发明人： Baojun Wang

IPC分类号： H01F3/00

CPC分类号： H01F3/00 ,  H01F3/14 ,  H01F27/24 ,  H01F30/16 ,  H02M3/338

摘要： A magnetic core for a transformer, which includes a closed ring with a thick part and a thin part. The thin part is magnetically saturated before the thick part when excited by the same increasing magnetic fields. The thin part only operates briefly at or near first quadrant saturation point or a third quadrant saturation point and, for the rest of the time, it operates in a state between the first quadrant saturation point and the third quadrant saturation point. The present invention overcomes the drawbacks of the conventional magnetic core for a self-excitation push-pull type converter, and significantly improves the efficiency of the converter when it is under a light load, and further improves its efficiency while under a rated load. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter is improved while still keeping the loss low.

摘要翻译： 一种用于变压器的磁芯，其包括具有较厚部分和薄部分的封闭环。 当由相同增加的磁场激发时，薄部分在厚部分之前是磁饱和的。 薄部分仅在第一象限饱和点或第三象限饱和点处或附近短暂地操作，并且在其余时间，其在第一象限饱和点和第三象限饱和点之间的状态下操作。 本发明克服了用于自激式推挽型转换器的常规磁芯的缺点，并且当其处于轻负载时，显着提高了转换器的效率，并且在额定负载下进一步提高了其效率。 随着磁饱和变压器线圈的匝数减小，转子的工作频率得到改善，同时仍保持低损耗。